Nut-lock.



J. MoILWAIN.

NUT Locx.

APPLIOATION FILED I'EB.13,1909.

Patented Nov. 2, 1909.l

W W w .W

WITNESSES a' l/r/ f UNITED STATES PATENT OFFICE;

JAMES MCI'LWAIN, or OKAWVILL'E', I'LLINoIs.

NUT-LooK.

To all whom it ma/y concem:

Be it known that I, J AMES MOILWAIN, a citizen of the United States, anda resident of Okawville, in the county of ashington and State ofIllinois, have inventeda new and Improved Nut-Lock, of which thefollowing is a full, clear, and exact description.

This invention relates to certain improvements in nut locks, and moreparticularly to that type of nut lock in which a retainer of wire or thelike eng-ages within grooves, openings or apertures in the nut, toprevent the latter from turning.

The invention consists in the features of construction hereinafterdescribed and particularly pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures, and in which- Figure 1 is alongitudinal section through a device Constructed in accordance With myinvention, said section being taken on the line 1-1 of Fig. 2; and Fig.2 is a top plan view of the construction shown in Fig. 1.

In my improved form of nut lock, I proride the nut with a plurality ofgrooves cut or pressed into one face thereof and extending from one sideedge to another. In the constructions shown I employ a nut 10 havingfour grooves 11 cut in one face thereof, each groove extendingdiagonally across a corresponding corner of the nut. The grooves areeach preferably of a depth somewhat greater than its width, but it isevident that the relative proportions of the grooves may be varied ifdesired.

If a single nut is to be locked in position, I preferably employ inconnection therewith a washer 12 formed from a fiat plate and preferablyof a slightly greater diameter than the nut. At diametrically oppositepoints the washer is provided with apertures 13 of a Width substantiallyequal to the Width of the grooves in the nut. Beneath the washer theplate, member, body or other part 14, throughwhich a bolt 15 may extend,is provided with a substantially V- shaped groove 16 in one surface.This groove is of a depth substantially equal to the Width of the groovein the nut and terminates at diametrically opposite sides of the Openingthrough which the bolt extends.

Specificaton of Letters Patet.

Application filed February 13, 1909.

H, v i a 1-,. Patented Nov; 2, 1969.

serial No. 4773536.

WVhen the washer 12 is placed in engagement with the surface of themember, the two recesses 13, 13 in the edges of the .washer comeadjacent the end of the V-shaped groove 16, so that a channel or passageis formed beneath the washer and terminates at diametrically oppositepoints thereof. Into this groove I place a wire 17 which may be of anysuitable form in cross section, and which constitutes the retainer. TheWire if used for holding` in position a single nut, is preferably of alength approXimately equal to three and one-half times the Width of thenut to be locked, although it may be longer or shorter, if desired. Thecenter portion of the Wire is bent to lie in the V-shaped groove 16, andthe washer is then placed over the wire, so that the ends of the latterextend upWardly through the recesses 13 in the washer. The nut is thensecured in place and the ends of the Wire are bent upwardly along theSides of the nut, thence transversely through tWo of the grooves in theouter surface of the nut. The ends of the Wire may be bent down intoengagement with the sides of the nut to protect them againstdisplacement. If the member 14 be of soft Wood, it is evident that. nogroove 16 need be provided, but that the screwing of the nut in placewill force the retainer into the wood to form the groove. In certainforms, the washer 12 may be omitted, if desired.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. In a nut lock, the combination of a member having an aperturetherethrough and a substantially V-shaped groove in its surface near theaperture and terminating at diametrically opposite points in respect tosaid aperture, a washer in engagement with the surface of said memberand having recesses in its opposite edges and adjacent the ends of saidgroove, anut in engagement with said washer and having grooves in itsouter surface, and a wire retainer disposed Within the V-shaped groovein said member and extending through said recesses in the washer andthrough the grooves in said nut.

2. In a nut lock, the combination of a member having an aperturetherethrough and a substantially V-shaped groove in its surface near theaperture and terminating at diametrically-opposite points in respect tosaid aperture, a bolt extending through said In testimony Whereof Ihavevsigned my aperture, a Washer 111 engagement Wlth the name tothspeclficatlon 1n the presence of Surface of sand member, a nut 1nengagement two Subscrlbmg Wltnesses.

With said Washer and having grooves in its i JAMES MCILWAIN. 5 outersurface, and a Wire retainer dispsed Wltnesses:

.Within said V-Shaped groove in sald member WALTER AUGUST MOEHLE,

and through the grooves in said nut. WILLIAM HENRY KUGLER.

